function x = find_x()
%模拟真实情况 随机选择打车目的地 
distance=[41 42 44 45 46 48 45 39 44 47 47 40 48 33 11 15 35 21 54 57 83 3];
probability=[0.1200 0.0900 0.0800 0.0600 0.0400 0.0700 0.0900 0.1000 0.0400 0.0300 0.0200 0.0300 0.0500 0.0700 0.0100 0.0100 0.0100 0.0200 0.0200 0.0200 0.0100 0.0100];

x=randsrc(1,1,[distance;probability]);

end

